Select option change values based on first select option , Jquery

Question

A brief explanation on the code below:

2 select options, with 1 button
the (#myButton) triggers the alert
The (#op2) 2nd select option value, depends on the first selection (#op1)

On JSFiddle my code work but whenever I transfer it on my website I get the Uncaught: TypeError. Please provide your suggestions to resolve TypeError.

 $('#myButton').on('click', function() { var op1 = document.getElementById("op1").value; alert(op1); var op2 = document.getElementById("op2").value; alert(op2); if (op1 =='a'){ $("#op2").html("<select id='op2'><option value='800'>800</option><option value='3000'>3000</option></select>"); } })

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <select id="op1" > <option value="a">a</option> <option value="b">b</option> <option value="all">all</option> </select> <select id="op2"> <option value="1">1</option> <option value="11">11</option> </select> <input type="submit" value="button" id="myButton" class="buttonClass" />

Answer 1

Your script needs to be placed in the head tag <head></head> and must be loaded before your script.

<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="yourLocalPath.js"></script>
</head>
<body>

<select  id="op1" >
        <option value="a">a</option>
        <option value="b">b</option>
           <option value="all">all</option>
        </select>
        
        
<select  id="op2">
    <option value="1">1</option>
    <option value="11">11</option>
</select>

<input type="submit" value="button" id="myButton" class="buttonClass"  />
</body>
</html>

Select option change values based on first select option , Jquery

Question

1 answers

solution1
0 2022-02-02 09:02:21

Select option change values based on first select option , Jquery

Question

1 answers

solution1 0 2022-02-02 09:02:21

solution1
0 2022-02-02 09:02:21